CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 847 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
2. 2.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="end"> (c) <span class="red"> (d) <div id="hero">
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
5. 5.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
7. 7.True or false: img is an element selector. (a) False (b) True
8. 8.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
10. 10.True or false: body is a class selector. (a) True (b) False
11. 11.True or false: #end is an element selector. (a) False (b) True
12. 12.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <li class="red"> (d) <p id="end">
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) h2 (b) #big (c) .hero (d) .red
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) #red (b) h2 (c) .box (d) .main
15. 15.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
16. 16.True or false: .card is a class selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .box (b) .star (c) #box (d) p
18. 18.🎯 Which element does the selector #main style? (a) <p class="note"> (b) <span id="logo"> (c) <span class="main"> (d) <span id="main">
19. 19.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
20. 20.True or false: #logo is an element selector. (a) True (b) False
21. 21.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
22. 22.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .main (b) li (c) div (d) #logo
23. 23.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .note (b) #intro (c) #note (d) .top
24. 24.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="big"> (c) <span id="big"> (d) <span class="red">
25. 25.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) span (b) #hero (c) #end (d) #big
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) #top (b) .big (c) h1 (d) .hero
27. 27.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: .star is a class selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) #red (b) .main (c) #logo (d) .red
30. 30.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .top (b) span (c) #menu (d) p
31. 31.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) p (b) #end (c) .box (d) #red
33. 33.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <div class="star"> (c) <li id="red"> (d) <li class="box">
34. 34.🎯 Which element does the selector #top style? (a) <li id="top"> (b) <div class="big"> (c) <li id="intro"> (d) <li class="top">
35. 35.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) #intro (c) h1 (d) #top
36. 36.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) .big (b) #main (c) #logo (d) .main
37. 37.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) div (b) #top (c) #red (d) .hero
38. 38.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
39. 39.True or false: .big is an element selector. (a) True (b) False
40. 40.🎯 Which element does the selector #main style? (a) <li id="main"> (b) <li class="main"> (c) <li id="logo"> (d) <div class="note">

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